Spool and bobbin



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, IN VEN TOR4 y' Harfy 4Ulf/2 on BY M Patented Aug. 14, 1928.

UNITED STATES HARRY D. CLINTON, OF JOHNSON CITY, NEW YORK.

sPooL AND 301mm.

Application led September 13,- 1927. Serial No. 219,301.

This invention relates to spools and bobsins and aims to provide an improved 'con- ;truetion thereof.

The principal object is .to produce spools 1nd bobbins of durable and non-breakable :haracter adapted to withstand the rough ise to which they are subjected in textilenills in the various operations of loading ind f eeding yarn or silk for cloth and fabric weaving.

The invention will be best understood by *eference to the accompanying drawings il- .ustratin one embodiment thereof.

In sai drawings:

Fig. 1 is a pers ective view illustrating t spool with head, ushing and plug at one :nd in applicative relation. to the barrel, the parts being shown in transverselsection;

Fig. 2 is a sectional elevation representing a. finished spool, the united parts at one end Jeing shown in transverse section;

Fig. 3 is an enlarged perspective view of' )ne form of bushing; and

Fig. 4 is a similar view of a modified form 3f bushing.

Referring to the drawings, 5 denotes the Wooden barrel or stale of a spool or bobbin. Said barrel is shown bored and counterbored to provide a central enlarged recess 5a with marginal ledge or shoulder 5b in its end.

In this instance, said recess and the counter-bore to said ledge are annular, the recess being tapered at its bottom toward the central bore of .the barrel and said ledge being formed at slight depth from the end of the barrel.l In some instances it may be desirable to make either or both the recess and counter-bore to the ledge polygonal rather than annular in form, but 1n such cases the form of plug and/or bushing hereinafter described, must be correspondingly modiiied as will become obvious.

The heads 6 to be applied at the ends of the barrel formed as described, are of hard vulcanized fibre or other composition resisting breakage. Such heads are out or punched from slabs of the component material and are stamped, pressed and trimmed to desired form having central apertures 6l of a shape and diameter corresponding with the counter-bore or inner edge of the barrel wall at its ends.

In the various types of spools4 made, the heads are substantially the same, any modiication or variance in the form thereof being in respect more particularly to their thickness, the shape and diameter of their central apertures and the trim of their outer peripheries. will hereinafter appear, it may be desirable in some instances to serrate the heads around the margins of their central apertures on the inner faces thereof for an extent equal substantially to the thickness of the extended wall portion of the barrel against which they are placed, such serrations being made deepest 'at said margins and termmative along the line where the outer edge of the barrel wall meets the heads.

In the illustrative embodiment the hard composition heads are shown secured to the spool barrel by means of fastening plugs 7 litted into the ends of the spool barrel in cooperation with bushings or liners 8 en gaging over a portion of the heads and under a portion of the plu'gs.

Said plugs are formed with shank and enlarged head portions 78L and 7h respectively conforming with the aforesaid cen'- tral recess and counter-bore of the. barrel so as to fit tightly thereinto. In this instance they are of annular form having central bores and tapering heads terminating with a shoulder 7 c opposing the marginal ledge 5b in the end of the barrel. As these plugs are subjected to compression strains, they are formed preferably of do -wood whlch is hard and not easily crac ed or split, although other material may be equally suitable.

Said bushings or liners are formed to tit Within the counter-boreof the barrel end with a portion thereof resting upon the aforesaid ledge 5b and another portion engaging over the head varound the margin of the central aperture therein. In this 1nstance the bushings embody metallic rings or sleeves having marginal lianges 8` and 8* at opposite ends thereof extending outwardly and inwardly respectively so that their walls are substantially Z-shape in crosssection. Portions of these bushings are serrated. for the purpose of impregnating or engaging in the spool head and plug, and in some instances into the spool barrel also. In Fig. 3 one embodiment of the bushing is shown, wherein only the fla-nge portions thereof are serrated, the upper iange being serrated on its under side and the lower iange being serrated on its upper side. In

However, for reasons which this embodiment the bushing will engage in the spool head and plug only, its body being merely pressed against the inner wall of the barrel.

In Fig. 4 another embodiment or modification ot the bushing is shown, wherein the wall or body portion thereof also is serrated, the serrations being of a somewhat different character. In this embodiment the bushing will engage in the end of the spool barrel in addition to the head and plug, thus assuring a stronger union of the parts.

In some instances it may be desirable to form these bushings or liners from metal having expansive qualities permitting them to spread or expand outwardly so as to engage deeper into the end of the spool barrel under the wedging force of the plug heads compressed therein. In some instances they may also be made frustoconieal or with walls tapering slightly toward their inwardly flanged ends to facilitate their insertion in the spool heads and barrel ends and to permit a greater expansion under action of the plugs.

In applying a head to a spool barrel, the head is placed against the end of the barrel with its central aperture registering with the counter-bore in the latter. One of the described bushings is then inserted through the central aperture of the head with its outwardly extended flange overlying the outer face of the head along the edge of said aperture and its inwardly extended flange resting upon the ledge 5b in the barrel end. One of the fastening plugs which is advantageously coated with glue orl cement, is then inserted through said bushing and pressed into place with its shank portion 7 fitting into the recess 5 of the barrel and its tapering head portion 'i'b compressed within the bushing, thereby pressing and in some instances also expanding the latter against the wall of the barrel. The pressure applied in thus wedging the fastener plug into place forces the bushing downwardly so that the serrations in the under side of its outer flange will embed or engage in the spool head around the central aperture therein, while the serrations in the upper side of its lower flange will embed or engage in the shoulder portion 7 of the plug. This applicative pressure may be continued until the outwardly extended flange 8 of the bnshin lies flush with the surface of the spool hea on the outer face of the latter as represented 1n Fig. 2.

When bushings or liners having serrations in their wall or body portions in addition to their peripheral flanges are used, they will embed or enga e also in those parts of the spool barrel an plug against which they are pressed or wedgedin the manner described.

Being so forced with its, head-portion wedged within and down upohythe bushing and its glue-coated shank or body portion fitted into the recess 5 of the barrel, the fastener plug together with said bushing which engages over the spool head, positively secures said head to the barrel. liy reason of its firm embedment or engagement in the outer face of the spool head and in the shouldered portion ot the plugr which holds it in place, the bushing member not only prevents removal of the spool head butI also prevents its rotation or slippage in relation to the barrel.

Upon completing a spool in the manner described, the fastening plug is trimmed off and the spool is finally finished and polished, whereupon it will have the appearance represented by the lower portion of Fi 2.

So rmly is the spool head thus secured to the barrel that when the glue or cement on the plug has dried, the parts cannot be again separated. Any abnormal force applied to remove the head from the barrel will simply break the head or split the barrel and plug before allowing any separation of the parts. A strong, durable and substantially nonbreakable spool of light construction is thus produced.

Obviously, variations in the form of' barrel-end, spool-head, fastening plug and bushing may be made without departing from the spirit and scope of the invention. Therefore it is not intended that the invention shall be limited by the appended claims to the specific construction shown and described.

Having thus described my invention, what I claim is new and desire to secure by Letters Patent of the United States is:

l. A spool or bobbin comprising a wooden barrel having a central shouldered recess in each end, hard composition heads faced against the ends of the barrel and having central apertures registering with the shouldered recess therein, thin metallic bush ings extending through said heads and into the barrel ends and having serrated marginal flanges extending opposltely from opposite ends thereof with their outward extending flanges over-engaging the apertured edges of the heads and their inward extending flanges pressing against the shouldered portions of the barrel, and wooden plugs at each end of the barrel having enlarged tapering headportions compressed into said bushings to expand the latter outwardly against the bar rel walls and shank-portions fitting into the recesses of the barrel, said plug being driven into place by the application of endwise force.

2. In a spool or bobbin, means for securing a hard composition head to a wooden barrel comprising a metallic expansible bushin and cooperating wooden plug extende through an aperture of the head into the lou lltl

lau

receptive end of the barrel in wedged engagement with the latter, said bushing being formed with serrated marginal flanges extending oppositelyfrom opposite ends thereof and having its outward extending flange engaging over the head while its inward extending lange is pressed against an abutment in the barrel end, and said plug being formed with a tapering head-portion compressed by endwise pressure into said bushing to expand the latter and with an extended shankportion thereof retained within a recess in the end of the barrel.

3. In a spool or bobbin embodying a wooden barrel and hard composition heads together with wooden fastening plugs; means cooperating with said plugs to secure the heads to the ends of the barrel, comprising metallic bushings having marginal flanges extending from opposite ends in opposite directions serrated on oppositely related surfaces, said bushings being inserted throu h central apertures in said heads and into tie ends of said barrel with their outward extending flanges over-extending and engaging in portions of the heads and with their inward extending flanges underlying and engaging in portions of said Aplugs which are driven endwise into the barrel with enlarged portions thereof compressing into the bushings and forcing the latter against abutment portions of the barrel, whereby the heads are clamped and held firmly to the ends of the barrel.

4. In a spool or bobbin, means for applying a hard composition yhead to a wooden barrel, comprising an expansible metallic bushing insertable through the head and partially into the recessed end of the barrel with a portion thereof overextending a portion of the head, and a plug having shank and enlarged tapering head portions driven into the barrel end with its head portion com ressed into said bushing to expand the atter engageably against the wall of the barrel and its shank portion litt-ing into the body of the barrel for holding it firmly in place, a portion of said bushing being engaged under and in the plug between the shank and compressed head portions thereof.

5. In a spool or bobbin embodying a wooden barrel and hard composition heads, together with wooden fastening plugs, means cooperatingwith said plugs for securing the heads to the ends'of the barrel, comprising serrated expansible metal bushings having portions thereof overextending portions of the heads and other portions underlying portions of said plugs which are driven lengthwise into the barrel ends with enlarged portions thereof compressing into said bushings so as to expand and wedge the latter against removal from the barrel.

6. A spool or bobbin embodying a wooden barrel and hard composition heads, together with wooden end plugs, wherein the heads are secured on the ends of the barrel by expansible means engaging over and into portions of the heads and under and into ortions of the plugs, which latter are driven into the ends of the barrel with portions thereof compressing into and expanding said means against the end-walls of the barrel so as to ahold the same therein against rotation and removal.

7. In a spool or bobbin embodying a wooden barrel and hard composition heads, together with wooden fastening plugs, means cooperating with said plugs for securing the heads positively to the barrel, said means comprising thin metallic bushings having serrated marginal flanges at opposite ends thereof respectively overextending portions of the heads and underlying portions of the plugs, which latter are driven into the ends of the barrel with enlarged portions thereof compressing into said bushings and with shank portions thereof fitting into recesses in the barrel body for wedging and holding said bushings against and within the walls of the barrel to prevent removal and displacement therefrom.

8. A spool or bobbin comprising a wooden barrel having a shouldered recess in each end; hard composition heads lfaced against the ends of the barrel and havingcentral apertures registering with the shouldered recess therein; metallic bushings extending through said heads and into the barrel ends having marginal flanges extending outwardly and inwardly respectively from opposite ends thereof, the outward extending flanges being serrated along their under surfaces and .over-engaging the aperture edges of the heads and the inward extending flanges being serrated along their upper surfaces and adapted to abut the shouldered portions of the barrel; together with wooden plugs at each end of the barrel having enlarged head-portions tapering to shoulders from which shank-portions thereof extend, said plugs being driven endwise into the barrel with their head-portions compressing into said bushings, their shank-portions extending and iittin into the recesses of the barrel and their s oulders depressing upon the inward extending flanges of the bushings, thereby wedging the latter tightly within the barrel to hold the heads in place on its ends.

In testimony whereof I affix my signature.

HARRY D. riLINTON.

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